Webscraping with python to extract data - python-3.x

Question

I am using following code. Everything works except the 'affiliation' part.
It returns an error:
AttributeError: 'NoneType' object has no attribute 'text'
Without the .text, it returns everything--whole code inside the class
import requests
import bs4
import re
headers = {'User-Agent':'Mozilla/5.0'}
url = 'http://pubs.acs.org/toc/jacsat/139/5'
html = requests.get(url, headers=headers)
soup = bs4.BeautifulSoup(html.text, 'lxml')
tags = soup.findAll('a', href=re.compile("full"))
for tag in tags:
new_url = tag.get('href', None)
newurl = 'http://pubs.acs.org' + new_url
newhtml = requests.get(newurl, headers=headers)
newsoup = bs4.BeautifulSoup(newhtml.text, 'lxml')
article_title = newsoup.find(class_="articleTitle").text
print(article_title)
affiliations = newsoup.find(class_="affiliations").text
print(affiliations)
authors = newsoup.find(id="authors").text
print(authors)
citation_year = newsoup.find(class_="citation_year").text
print(citation_year)
citation_volume = newsoup.find(class_="citation_volume").text
print(citation_volume)
citation = newsoup.find(id="citation").text
print(citation)
pubdate = newsoup.find(id="pubDate").text
print(pubdate)

Answer 1

This exception was triggered because it did not find any element with the class "affiliation".
I have checked and could not find any element with this class value in the source HTML (or any other attribute to that matter) in the first url your script scrapes.
I would catch the error to avoid your script to break and return None or a default string when it does not find the element.
Something like that would work:
try:
affiliations = newsoup.find(class_="affiliations").text
print(affiliations)
except AttributeError:
affiliations = None